A similar thing happened to Boy's new Altima (he just got it in Nov., too). An 18-wheeler ran him off the road, into the emergency lane, and then kicked up a rock and it put a 5-8 inch long crack in his windshield.
I had one nearly run me off the road (after the bastard was trying to pass me on the right!) a few weeks ago. It was one of those huge things that carries cars on it. I wasn't able to see the plate (because of the giant car hanging off the back of it covering the plate), but I did catch the name of the company. So I called *LSP on my cell (Louisiana State Police) and reported the asshole. We were near a weigh station - I hope they pulled his ass over...